A coherent mass of pollen, as in the milkweed and most
orchids.
1. Not avoidable; incapable of being shunned or prevented; inevitable; necessary; as, unavoidable troubles. 2. (Law) Not voidable; incapable of being made null or void. Blackstone. Unavoidable hemorrhage (Med.), hemorrhage produced by the afterbirth, or placenta, being situated over the mouth of the womb so as to require det...
